Which counties of England would you expect to be the most active on Twitter? A project of the social media agency simplyZesty is trying to figure that out. Their idea was to create a list of twitterers by using the site's new lists feature – and it's only giving itself 72 hours to do so.

After simplyZesty started the crowdsourcing project in Ireland, they extended it to England and the US. Deadline for people to take part is 10am this Friday. So have a quick look here to add yourself, or tweet the following message: I want to get listed #Twitter(your county)